User-defined <a href="http://www.setgetweb.com/p/iSeries/v5r3/rzaaxmstfsknow.htm">file system</a> (<a href="http://www.setgetweb.com/p/iSeries/v5r3/rzaaxmstuseudfs.htm">UDFS</a>)

Integrated File System Introduction

User-defined file system (UDFS)

The UDFS file systems reside on the auxiliary storage pool (ASP) or independent auxiliary storage pool (ASP) of your choice. You create and manage these file systems.
In addition, they:

Provide a hierarchical directory structure similar to PC operating systems such as DOS and OS/2.
Are optimized for stream file input/output.
Support multiple hard links and symbolic links.
Support local sockets.
Support threadsafe APIs.
Support *FIFO objects.
Support the journaling of object changes.

You can create multiple UDFSs by giving each a unique name. You can specify other attributes for a UDFS during its creation, including:

An ASP number or independent ASP name where the objects that are located in the UDFS are stored.
The case-sensitivity characteristics of the object names that are located within a UDFS.
The case-sensitivity of a UDFS determines whether uppercase and lowercase characters will match when searching for object names within the UDFS.

See the following topics for more information about user-defined file systems:

UDFS concepts
Use UDFS through the integrated file system interface

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